Mf. Reystolle et al., SOME PROPERTIES OF POLY(CARBONATES) AND POLY(THIOCARBONATES) FROM DIPHENOLS WITH METHYL-GROUPS IN THE 3-POSITION IN THE PHENYL RINGS, Polymer international, 46(2), 1998, pp. 93-98
Glass transition temperatures and the corresponding activation energie
s of poly(carbonates) and poly(thiocarbonates) with different side-cha
in substituents obtained from diphenols with methyl groups in the 3-po
sition in the phenyl rings have been determined by differential scanni
ng calorimetry at several scanning speeds. Partial specific volume and
specific refractive index increments have also been obtained by densi
metry and refractometry measurements in benzene at 25 degrees C. The e
ffect of the different substituents on these properties has been analy
sed. (C) 1998 SCI.